The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.
萧何错愕地问道：韩信，既然你是受越王所托前来的，那么还以到来的时候不直接说明呢？这样的话也能少去了很多的误会，少走很多弯路吗？这个问题也是刘邦所不能理解的，他不知道这个韩信到底在玩什么花样？或者说是尹旭想要做些什么？他现在很想知道，这些安排到底是尹旭事先的计划，还是韩信自主做张，这个答案所意味着结果恐怕大不一样。
过来仔细勘察，果然有了新发现，真乃天佑我大靖也
河源精神病院的吴啸舟大夫有一个习惯，那就是永远靠着墙坐，因为他害怕背后突然有人冲过来，掐住他的脖子……
又对她暗地里使眼色。
无可奈何之下，的项羽只得下令，着重对付彭越的散兵游勇。
In the months before the 2016 election, the Democratic National Committee was hacked. Documents were leaked and fake news spread wildly on social media. In short, hackers launched systematic attacks on American democracy.
RH1, …
For example, this ISO file on my desktop! It looks like a compressed bag, hehe! Show that the extended name is indeed. Iso.
Ignorance, impetuousness and conceit are probably the three most dangerous weaknesses in investment. However, what is more troublesome than these three items is the compound danger. For example, ignorance + conceit escalates to stupidity, ignorance + impetuousness becomes gamblers, and all three are typical "stupid gamblers". From this, we can see that continuous learning, guard against arrogance and rashness, self-knowledge and honesty are the necessary prerequisites to avoid becoming stupid gamblers.
在徐太太的热心安排下，范柳原和白家七小姐宝络相亲。白流苏在跳舞时不慎抢了宝络的风头，遭到家人的冷言冷语，处境愈
来人，即刻传洪家族老和胡家族老。
他早就想上去瞧瞧了，那上边的人都在说笑吃果子哩，不知多快活。
Focal length, also known as MF. It refers to manual focusing. When taking photos, you need to click on the screen to determine the focus.
野间口彻演原机动队爆炸物处理班的特搜班成员，冷言挖苦人的樫井勇辅，有卓越的嗅觉，有着被称作「共感觉」可以看见气味区分颜色的特殊能力持有者。
《地球脉动》创剧人倾情打造的《我们的星球》采用令人惊艳的摄影和技术，采用前所未有的摄影方式探索了地球上尚存的野生区域和那里的动物。
/grin (grin)
(未完待续……) show_style();。
Fan Bingbing Spokesman: 2.5 Million RMB Every Two Years Liu Yifei Spokesman: 3 Million RMB Every Two Years
